Turning or boring appliance.



Pa'tentedSept. 14, 1915.

2 SHEETS-SHEET1.

0. W. MUELLER.

TURNING 0R BORING APPLIANCE.-

APPLICATION FILED JUNE 13. 1914.

CQLUh\BlA PLNOURAPTI COHWASHNGTON, Dv C.

o. W. MUELLER.

TURNING 0H BORING APPLIANCE.

APPLICATION FILED JUNE I3.' 1914.

1 153,241 Patented Sept'. 14, 1915.

2 SHEETS-SHEET 2.

Wiwesse j Aww/@MM coLuMBxA PLANOURAPH C0.. WASHINGTON D c inthe turret 8 successively to the work caroscnn wfMUELLnR, or CINCINNATI, oIIIo;l

. TURNING on BoniNG APPLIANCE.'

Spcification of Letters Patent.`

Application filed J une 13, 1914. Serial No. 844,860.

To all whom t may concern,

Beit known that I,- OscAR W. MUNLLER, acitizen` of the United States, and a resident of Cincinnati, in they county of Hamilton and State of Chim/.have invented certain new and useful Improvements in Turning or .Boring ppliances, of which thefollowing is a specification. Y

V- My invention relates to turning and boring; and its object isto' provide simple means for quickly and economically cutting correct grooves in the cylindrical interiors of successive bearings or thelike, these grooves generally being provided to distribute the lubricant in the bearing. Y.

"My invention consists in the parts and in the v details of -construction and arrange mentof parts asvwill hereinafter be more fully described andl claimed. Y j 1 In the drawings: Figure 1 is aside elevation of a device embodying"mylinvention, also showing parts of a turret lathe to .which it is applied;` Fig. 2 is a cross sectional elevation on the line of Fig. 1, lookingto the left toward the spindle of the 'lathe;

Fig. 3 is an enlarged'rvertical cross sectionV through a bearing, yand the tool and its holder operating under the interior of the bearing g Fig. 4L is a horizontal'cross section on the line y-g/ of Fig. 3;and Fig. 5 is a horiz'mtal cross section on a line correspond ing to the line a-ee ofv Fig. 2, but showing a modiliedholder with tools working on the convex surface of ashaft instead of onthe interior of a bearing.l

I have ,chosenffor illustration of the luse of my linvention a turret flathe of which are shown only the parts more intimately associated ywith my invention, these being vthe bed 1 with a bearing 2 for the spindle 3;V

the chuck 4 on the spindle, and, as'here shown, a gear 5 on 'the spindle 3 on the side.`

af the bearing 2 opposite from the chuck forming a part ofthe drivingmechanism of the lathe, and 'having a hub 6; and a carriage vicarrying the turretl 8 ina cross slide Qiman'ipulated by the handle l0. 1t will be understood that the carriage 7 may have suitable mechanism for sliding itlongitudinally of the bed .1 to bring the-tools carried ried in the chuck 4.

If the bearing or other piece voflwork is rotated concentric with its cylindrical `inte-v rior and a cutter is simultaneously reciprocated axiallyof the cylindrical interior and V raeenteafsepr. 14., 1915.

in cutting contact with the concave surface ofsaid interior; and if the reciprocations are. synchronous with the rotationsof the work, the cutter will travel over the same path continuously,and if fed radially of the cylindrical interior, will cut deeper at each i travel over the path, so that a groove may be cut of. any de pthdesired; and if one reciprocation of thecutter' be given for each rotation'of the cylindrical interior, the groove will be in the form of an ellipse withfends ynear respective ends of the cylindrical interior but at opposite sides thereof. If the 'rotationof the work be stopped land a cutter applied diametrically opposite `from the placevof stoppage and then the operation resu'med,"=another` ellipse will be cut, crossingV the first ellipse midway of the lengths of the twoellipses, and with ends diametrically opfl posite respective ends of said first ellipse.-

Vvides a highly satisfactory lubricant distribution'system in the bearing, and with the us`J of my invention it may be very econom ically produced. Y

Asexempliied herein, the device for operating as above described comprises a crank disk. 11 .fixed together with a bevel gear 12 ona vertical shaft 13. -A bracket 14 is bolted tothe top of the bearing2 of thelathe, and this bracket 14; has a bearing 15 for the vertical shaft 13,v said shaft .being held down therein by a collar 16 on the lower end of theshaft. A bevel gear 17 is in meshfwith the bevel gear 12, and is fixed on a shaftl` which turns in a bearing 19V in the bracket 141 and extends rearwardly and has a spur gear 2O fixed on it, which spur gear isin `mesh .with a spur `gear 21 fixed on the hub 6 of the gear 5 of the spindle 3 of the lathe. The spur gears 20 and 21 are offequal diameter, andthe bevel gears 12 and 17are miter gears, so that the crank disk 11-is turned once for each vturn ofthe clampinghead may turn in a :horizontal plane with respect to the pedestal 22; or the turret 8, withthe pedestal, may turn with Such combination of the elliptical grooves 1- inthe cylindrlcalrinteriorof a bearing prorespect to the clamping head, to bring suc lcessive tools into operative position. On the crank disk 11 is aiwrist pin 26 carried` in a radial slide`27on the crank disk, which slide i vis adjust-d radially by means of'a vscrew A head 29 slipsonto this wrist pin 26, and in it is fixed a connecting 'barfSO-which'eX# tends horizontally' over and through lthe clamping Vhead 24.' This clamliinfghe'ad 'is clamped tothe bar at any longitudinal adjustment ofthe carriage 7 ofthe lathe;

land by means of the radial slide27 in the crank diskll the wrist pin 26 may be fixed atany desired-distance from thef-center of .the'crank-disk.; Y

c, From the foregoing it will be vseen that at each "revolution of the crank disk corresponding with va lrevolution of' the lathe spindle, the carriage 7 will be reciprocated once through lthe medium 'of the pitman bar .Y 30 `and they other connecting parts .just described. VBy varying the radial distance of i 4 thevk wristpin 26v from the center ofthe in the iend of the'Y bar 3l.

'crank disk ll'the stroke or the length of thisreciprocation ofthe carriage 7 may be varied. i

yllhenizusing ymy invention, one of the holders lof the turret S receives a ybar '31 I which has, horizontally through it, a cutter '32 fixe-d therein by means of a set screw 33 As shown,"this cutterf32 extends horizontally outward on v both 4sides'of the-bar 3l, and, accordingly as the bar 341 is brought close to lone sideior the otherof the cylindricalV interiorV of the work B4, the cutter 32 will cut with one proyecting end 35 lor 'the' other projecting `end 36,'

to cutfon'eor the vother ofi-the two 'elliptical grooves 34 whichv were hereinbefore described. Sin-ce it is not desirable to reverse ther'otation yof the work when'` the cutter is Y transferred from fone side to the other thereof, the cutter 32 has its opposite ends 35 and 36' oppositely directed, because the-interior surface 'of the work is moving down on Ione side 'of the center and 'up on the other.

Thenature 'of the motion imparted to the bar 81 carried the turret 8 is such that it mores very slowly near the ends of its Istroke while-the rotation of the work isjuni'form; and this results fin a well roilnded end for Y the/elliosewithoutan-shar angles. As a result of thisyslowk motion ,at 'the Iends of the stroke the cutting at Vthe ends ofthe ellipse is performed almost entirely; by virtue ofthe 1 will Vbe substantially transverse Iof the nearly circumferential path of'xth'e. cutter at `th'epend ofthe ellipse; and V4from there is, presented increasingly diagonally ofthe path until the mid'dlefof' the :ellipse isi reached, when the cutter is traveling along the path practically edgewise; and, if only the .longitudinal :mo-

' tion. :entered .into.:the ;operation, Would merely cut a narrow groove of V-shaped cross sectionlike the shape of the end of the 1 cutter; buthere the rotary motion of the uwork contributes to the width of the cut `clamping it by means of the clamping head 24 tothe bar B'O at the proper point therealong. As before alluded to, the cutter may `be fed into the work by moving the cross slide 9 across by turning the crank l0. This means also may be usedto transfer the cutter tothe other side of the Work, to cut 'the other ellipse, an opposite turning of the cran-k then serving to feed the cutter into the work.

lt will be seen that the turret 8 may carry other tools to perform other operations on the work 341-, and whil'e these tools are in use the mechanism of .my invention may be disconnected by raising the bar 30, which will .pull the head 29 off the wrist pin 2G and raise the shank of theclanipin'g head 24 out of the `socket 23 in the pedestal 22. This bar -30 and these parts may be laid aside without disturbing the 'adjustment of the i clamping head 24 along the bar 30, then leaving the carriage 7 and turret 8 uninliu'enced by the mechanism geared to the lathe spindle, so thatthe lathe may be used vin th'e ordinary manner using a turret lathe. Then, in similarly lfinishing a considerable number of pieces of work, when the next piece is to have the grooves cut, it is necessary only that it be set in the chuck Il in the same relative position that the last piece of work was set, and when "the bar 30 is again connected to the crank disk l1 by slipping the head 29 over the wrist pin 26, and the carri-zuge 7 brought to the position whe-re it will receivethe shank 25 in the socket 23, the operator will be assured that the cutter 3Q is in the proper relative position longitudinally to properly locate the ellipsein the interior of the work, and .igt is necessary only to start the rotation of the work, which will also start the reciprocation of the cutter, and then begin to feed the cutter into the work by turning the vhandle 10 of the 'cross slide 9.

As here shown, the bracket 14, is viixed very rigidly `on top of the bearing 2 by providing studs 37 screwed into the lower part ofthe bearing and receiving the cap 3S of the bearing with nuts 39 screwed down on the studs against the cap, leaving the upper ends of thestuds 37 projecting through snugly lit- -into the cap 38 ofr the bearing 2, holds the bracket 14 rmly downlontop of thenuts '89, and the'four studs 37 rigidlyhold. the

bracket against vibration inl aV horizontal plane. A rigid mountingrofthis bracket is important, .since it must provide the reaction for the entire action of reciprocating' the 'cutter 32, and any movement of the bracket 14 Will resultin irregularity of this reciprocation. Y j ,o

It vvill be understood that the applianceis Work and reciprocating cutter may be .brought intoproper juxtaposition. F or in'- stance, on an engine lathe, the gearing on the bracket 14er other suitable bracketl may lbe mount-'ed adjacent to the spindle of the lathe With a gear corresponding to the kgear 21 mounted at some suitable place to rotate With the spindle, and the pedestal 22er 'other suitable element may be mounted on lthe carriage of thelatheyso that the carf riage Will be reciprocatedat each rotation of the spindle in a manner similarto` the reciprocation of the carriage? ofthe turret lathe. When the appliance is thus to be some convenient means fory effecting this release and as conveniently connecting the carriage again to the lead screw When my appliance is not to be used.; The removal ofV Y the connecting bar-30.as before described,

will, in these instances, also be. very convenient; and,.at any time,rthe connecting bar will serve as a gage to-bringthe cutter to the required location longitudinally ofthe lnext piece of Work, `so that thecutting'of .all the pieces Will bealike.

It is sometimes desirable to havey lubricant distributing grooves cut on the yconv'exvsur.- face of the shaft instead of ,on the interior of the bearing, and my invention is also adapted for this Work by being arranged substantially as shown in Fig. 5, Here the shaft 41 is held in the chuck4 in a usual manner, but the turret 8 carries yaimodified holder 42 extending belovv the shaft and having upwardly extended *bifurcations 43 shaft, each ellipse having its opposite endV on adiametrically opposite'side of the shaft 'bv Letters Patent is:

las Were the elliptical grooves in the interior of the bearing. The same facility of operation in cutting `first one groove and then `the other `and having them accurately located alongthe shaft as Well as With respect` to each other, is possible, as .vas before described Vin connection with the cutting of such grooves on the interior of a bearing.

Fromxthe foregoing it will be understood lthat -my invention is capableof considerable modication, and therefore I do not Wish'to be understood as being limited to the eX- V amples herein shown and mentioned, but -equally Well adapted for use With any other 1 lathe or other machine in Which the rotating What I claim as new and desire to secure l. In combination with means for concentrically rotating an object hearing a cylindrical surface, cutting means adapted to engage With said surfacey at either one of diametrically opposite sides thereof, means for shifting said cutting engagement from the one sideto the other, andmeans for reciproeating the cutting means synchronously with .the rotation ofthe object. 4

In combination with a lathe comprising a chuck adapted to hold and concentrically rotate an objectV having a cylindrical, surface,'means for rotating said chuck, and a r0- tatable and rcciprocatable turret adapted to hold a plurality of tools to be operatively applied to said surface successively by rotaUf tion and reciprocation of the turret, a cutter carried as `one of said tools in said turret to bear on said surface of said object held -by said chuck, reciprocating means operated in conjunction with the means for rotating said chuck for reciprocating said turret synchronously With the chuck and the object held therein, and operativeconnection from said reciprocating means to said-turret, said operative connection being detachable from said turret to leave the turret free from reciprocation of the reciprocating means, Wherebythe turrety may be rotated Vand reciprocated to apply tools held thereby, other thansaid cutter, to said object. t

3. In combination With means for concentrically rotating an object having a cylindrical surface, a cutter, means for holding said cutter against said surf-ace, means for Vreciprocating said cutter synchronously Awith the 'rotation of the object, and means to vary the length of reciprocation, said reciprocating means having detachableoperative connection with the cutter and from the ref ciprocating means, and forming a gage for proper location of the cutter on objects succe'ssively and uniformly held by the rotate c ing means. *Y Y Y. j y

`4. In combination With means for concentrically rotating an object having a cylindrical surface, a cutter, means for holding said cutter against said surface, lmeans for reciprocating said cutter synchronously With the rotation of the object, operative connec-l tion from'l the'reciprocating means to the ject, and means to vary the lengt-h of reciprccation, said reciprocating means having 'detachable operative connection With the cutter, and, from the reciprocating means, `fand forming a gage fcr proper location of the cutter on objects successively and uniformly hel'dby the rotating means.

. 5. lncombination with means for fconcentri'cally rotating an object having a cylindrical surface, a cutter having opposite cutting ends, means for holding said cutter against said sui face, means for reciproating said cutter synchronously with the rotation of. thev object, operative connection from the reciprocating means to the cutter, adjustable in its connection 'with the cutter, t0 vary zthe location of the reciprocation lof the cutter longitudinally of said object, said reciprocating means having detachable operative connection with the cutter, and means for kfeeding the lcutter .toward the surface ofthe object, said means also bef ingv adapted for transferring the cutting eng-agement fromlone side Iof the surface to the 'diam'etrically opposite 'side thereof, 'and 'forvfeeding the cutter to said diam'etrically opposite side when transferred.

" 6. ln vcombination with *means for concentrically rotating an object having a cy'- V7. ln combination with means for concentrically rotatingY an Aobject lhaving a cylindrical surface, a cutter having opposite cutting ends, means for holding said cutter against' said :surf-ace, means for reciprocat-v f to vary the location of the reciprocation 'of Vthe cutter' longitudinally of said object,

means to 'vary the length of reciprocation, said reciprocating means having detachable 'operative connection With the cutter, and means for feeding 'the cutter toward the surface of theobject, said means also being adapted x for transferring the cutting engagel'nent from one side of the surface to the `diametrically opposite sidethereof, and for feeding the cutter to said diamctrically opposits side when transferred.

B. In vcombination with a lathe comprising Ia spindle, and means on the spindle for concentrically holding anobject having a cylinvdrrcal surface,and a carriage reciprocatable in direction axially of the spindle and of the concentrically held object, a cutter bearing against the cylindrical surface, a holder carried by the carriage and carrying the cutter, a cra-nk rotatably mounted on the lathe, a pitmanpiveted to the crank and to the carriage, vand operative connection from the crank to the spindle, whereby the crank is rotated and recipro'cates the carriage and the cutter synchronously with the rotation of the spindle, said pitman being removable from the crank and from the carriage, but acting asa gage t0 properly position the carriage ivhen again applied to the crank and carmage.

9. In combination With a lathe Icomprising a spindle, and means on the spindle for concentrically holding an object having a cylindrical surface, and a carri-age reciprocatable in direction axially fof the spindle 'and the concentrically held object, a cutter bearing against the cylindrical surface, a holder carried by the carriage and carrying the cutter, a crank mounted on the lathe to rotate around axis at right angles to that of thc spindle, a geared operative l'connection between the spindle and the crank, whereby the spindle rotates the crank, a pedestal xed en the carriage, said crank comprising a Wrist, -a pitman rod, `a head 'on'tlrepitman rod fitting on said Wrist, a clamping head 'clamped on the pitman rod, said pedestal having a socket, and a shank on the 'clamping head and 4extending into the socket, whereby' the rotation of the crank reciprocates the Vcarriage land the cutter synchronously With the rotation of the spindle and the objectheld on the spindle, said pitman rod having its head removable from said Wrist, and the shank of its clamping head removable from the socket in the pedestal to remove the cutter from the object, but acting asa gage to again properly locate the cutter 'With respect to the same on a successively and uniformly held object. 10. kIn combination with a. lathe comprising a spindle, and means on the spindle for concentricall'y holding an object having a cylindrical surface, and a carriage reciprocatable in direction axially of the spindle and the concentrically held object, a cutter bearing against the cylindrical surface, a holder carried by the carriage and carrying the cutter, a crank mounted on the lathe to rotate around an axis at right angles to that of the spindle, a geared operative connection between the spindle and the crank, whereby the concentrically held object, a cutter -hav the spindle rotates the crank,'a pedestal xed on the carriage, said crank comprising a wrist, a pitman rod, a headon thepitman rod fitting on said .-wrist, a clamping-head clamped on the pitman rod, said pedestal having a socket, and `a shank on the clamping 4head and extending into the socket, whereby the rotation of the crank vrecipro-` Y Cates the carriage and the cutter synchronously with the rotation of thefspindle and the object held on the spindle, said pitman rod having its headremovable from said wrist,v and the shank of its clamping head re-` movable from the socket "in the pedestal toV remove the cutter from the object, but acting.

' holder carried by the carriage and carrying the cutter, a crank mounted on the lathe to rotate around an axis at right angles to that of the spindle, a geared operative connection between the spindle and the crank, whereby the spindle rotates the crank, apedestal fixed on the carriage, said crank comprising a wrist, a pitman rod, a head on the pitman rod tting on said wrist, a clamping head clamped on the pitman rod, said pedestal having arsocket, and a shank on the clamping head and extending into the socket, whereby the rotation of the crank reciprocates the carriage and the cutter synchronously with the rotation of the spindle and the object held on the spindle, said pitman rod having its head removable from said Wrist, and the shank of its clamping head removable from the socket in the pedestal to remove the cutter from the object, but acting as a gage to again properly locate the cutter with respect Vto the same on a successively and uniformly held object, said wrist being mounted on said crank for adjustment radially thereof to vary the length of reciprocation of the carriage as imparted by said able from the pitman bar to be clamped a various locations therealong, to variously locate the carriage and the cutter.

12.` In combination with a lathe compris ing a spindle, andmeans on the spindle fo concentrically holding an object having aVM cylindrical surface, and a carriage reciproca table in direction axially of the spindle and ing opposite cutting ends, either of whichis adaptedto bear against the cylindrical sur-` face, a holder carried by thecarriage and carrying the cutter, said carriagecomprising across feed carrying the holder and the cutter, whereby, the cutter isfV fed', ,into enga gement withthe object andwhereby the cut-.yn ting engagement Imay vbe transferredzfrom one side nofthe object to the ldiarnetrically.,n opposite side thereof, a f crank@ rotatably mounted on said lathe, operative connection fromythe spindle to the crank, and-a pit-` man bar connecting the crank to the carriage, wherebythe carriage is reciprocated. synchronously with the-.rotation of the spindle and of the object `held on the spindle.

y 13. In ,combinationwith a lathe comprising aspindle, and means on the spindle forL concentrically holding anr object having a cylindrical surface,` and aA carriage recip-` rocatable in direction axially vof the spindle i and the concer'ltrically4 held obj ect,A a cutter having `oppositev cutting ends, either of wristpin, a clamping head clamped on the pitman bar. and a shank on the clamping head extending into the socket on the pedestal, said headbeing upwardly removable from said wrist pin, and said shank beingupwardly removable from said socket, whereby the pitman bar is readily disconnected from the crank disk and from the carriage, said carriage comprising a' cross feed by means of which the cut-ter may be brought into cutting engagement with either one of diametrically opposite sides of the cylindrical surface of the object and fed against either side to cut a groove therein, the radial slide of the crank disk enabling the stroke of the cutter to be adjusted, andthe clamping head being adapted to be clamped to the pitman bar at various locations therealong, to variously locate the cutter along said cylindrical sur- L face of the object. crank, and said clamping head being releas- 'g ing a spindle and means on the spindle for gaconcentrically holding an object having a [,cylindrical surface, and a carriage recip- 14. ln combination with a lathe comprisocatable in direction axially of the spindle land the concentrically held object, a cutter carried by said carriage to bear against the A Y surface, a bracket rigidly mounted on the lathe over the spindle, a

- shaft vertically mounted in the bracket, a

shaft horizontally mounted in the bracket,

f miter gears on thesev shafts, respeetively,

meshing together, a spur gear i-Xedon the horizontal shaftv `i-n the bracket, meshing with andof eofual,` diameter with the spur `gear rotating-With said spindle, a crank rotating with theA vertical shaft Vin the bracketyand'a/pitman pivoted to the crank and to thecarriage, whereby the cran-k reciprocates thecarriage? l5. In, combination with. a lathe comprisiIlf-I'a Spindle and means on the spindlefor .conoentrically holding* an obje'et having a cylindrical; surface, and a. earri'age reciprocatab'le iIi direction' axially ofthe spindle and the ooncen'trieally helio-il 'objfeen aei'itter carried bysaid arriage tov bear against the cylindrical' surface, a' bracket rigidly mounted on the lathe over the spindle, a

Vshaft vertically monnted' in the bracket, a

Copies; lthis patent may' he obtains@ for shaft horizontally mounted in the bracket, miter gears on these shafts, respectively, meshing together, a spur gear fixed on the horinontal shaft in the bracket, meshing with and of equal' diameter with the spur gear rotating With said spindle, a crank rotating with the vertical shaft in the bracket, a pedestal fixedon the carriage, a pitman bar, means for pivotal engagement between the pitman bar and said crank, andr means 1f five cents each, by addressing the Commissioner of yatentg, Washington: D@ C3 

